Radium single-ion optical clock
Atomic Physics
2011-02-25 v1
Abstract
We explore the potential of the electric quadrupole transitions - , in radium isotopes as single-ion optical frequency standards. The frequency shifts of the clock transitions due to external fields and the corresponding uncertainties are calculated. Several competitive Ra candidates with 223 - 229 are identified. In particular, we show that the transition - at 828 nm in Ra, with no linear Zeeman and electric quadrupole shifts, stands out as a relatively simple case, which could be exploited as a compact, robust, and low-cost atomic clock operating at a fractional frequency uncertainty of . With more experimental effort, the Ra clocks could be pushed to a projected performance reaching the level.
Cite
@article{arxiv.1102.4988,
title = {Radium single-ion optical clock},
author = {O. O. Versolato and L. W. Wansbeek and K. Jungmann and R. G. E. Timmermans and L. Willmann and H. W. Wilschut},
journal= {arXiv preprint arXiv:1102.4988},
year = {2011}
}
Comments
20 pages, 1 figure